The point at which your line inflects upward at the end represents a date prior to the 2016 election. Also, in percent growth terms, 2013 was a better year than 2017.
And in “percentage terms” there was ZERO growth between middle of 2015 and the election. Wanna lose this argument again?
Yes things were pretty much flat not only from the middle of 2015 but earlier than that. In fact calendar year 2015 had a negative return (-2.23%). But when you look at the Dow over time this is not outside of normal variation. There was a 25.08 DJIA return in 2017 after there had been a 13.42% return in 2016. That's great.
But were you raving about what a great job Obama was doing when there was a 26.50% return in 2013 after a 7.26% return in 2012?
Also, there is still this problem: The upswing you're talking about started BEFORE election day 2016. Now, to be honest, there was another upward inflection around the end of 2017. But then it peaked in late January 2018 and things are down since then.